FILE - In this April 19, 2013 file photo, a sampling of electronic cigarette supplies are seen in a shop in Oklahoma City. The city of Bismarck, N.D., is the latest city in North Dakota to ban the ... more

FILE - In this April 19, 2013 file photo, a sampling of electronic cigarette supplies are seen in a shop in Oklahoma City. The city of Bismarck, N.D., is the latest city in North Dakota to ban the sale of electronic cigarettes to people under the age of 18, and Williston, N.D., is likely not far behind. E-cigarette inhalers are an odorless, vapor-emitting substitute for tobacco cigarettes. (AP Photo/Sue Ogrocki, File) less